R
Rural_GrowOp
Guest
I'm jumping in late but I'm a firm believer in rolling bats. Its like ice water. Sometimes theres just nothing better!!
I found a MAPS study and apparently joints have the best tar to thc ratio testing against 7 other devices including bongs and vapes.
http://www.maps.org/news-letters/v06n3/06359mj1.html#6
I wasn't really surprised at the results. I always remembered hearing when i was younger that bongs "filter" out some thc.